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Tan AR, O'Shaughnessy J, Cao S, Ahn S, Yi JS. Investigating potential immune mechanisms of trilaciclib administered prior to chemotherapy in patients with metastatic triple-negative breast cancer. Breast Cancer Res Treat 2023:10.1007/s10549-023-07009-8. [PMID: 37418031 PMCID: PMC10361859 DOI: 10.1007/s10549-023-07009-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/11/2023] [Indexed: 07/08/2023]
Abstract
PURPOSE In a phase II trial in patients with metastatic triple-negative breast cancer (mTNBC; NCT02978716), administering trilaciclib prior to gemcitabine plus carboplatin (GCb) enhanced T-cell activation and improved overall survival versus GCb alone. The survival benefit was more pronounced in patients with higher immune-related gene expression. We assessed immune cell subsets and used molecular profiling to further elucidate effects on antitumor immunity. METHODS Patients with mTNBC and ≤ 2 prior chemotherapy regimens for locally recurrent TNBC or mTNBC were randomized 1:1:1 to GCb on days 1 and 8, trilaciclib prior to GCb on days 1 and 8, or trilaciclib alone on days 1 and 8, and prior to GCb on days 2 and 9. Gene expression, immune cell populations, and Tumor Inflammation Signature (TIS) scores were assessed in baseline tumor samples, with flow cytometric analysis and intracellular and surface cytokine staining used to assess immune cell populations and function. RESULTS After two cycles, the trilaciclib plus GCb group (n = 68) had fewer total T cells and significantly fewer CD8+ T cells and myeloid-derived suppressor cells compared with baseline, with enhanced T-cell effector function versus GCb alone. No significant differences were observed in patients who received GCb alone (n = 34). Of 58 patients in the trilaciclib plus GCb group with antitumor response data, 27 had an objective response. RNA sequencing revealed a trend toward higher baseline TIS scores among responders versus non‑responders. CONCLUSION The results suggest that administering trilaciclib prior to GCb may modulate the composition and response of immune cell subsets to TNBC.
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Affiliation(s)
- Antoinette R Tan
- Levine Cancer Institute, Atrium Health, 1021 Morehead Medical Drive, Charlotte, NC, 28204, USA
| | - Joyce O'Shaughnessy
- Baylor University Medical Center, Texas Oncology Dallas, US Oncology Research, 3410 Worth Street, Suite 400, Dallas, TX, 75246, USA
| | - Subing Cao
- G1 Therapeutics, Inc., 700 Park Offices Drive, Suite 200, Research Triangle Park, NC, 27709, USA
| | - Sarah Ahn
- G1 Therapeutics, Inc., 700 Park Offices Drive, Suite 200, Research Triangle Park, NC, 27709, USA
| | - John S Yi
- G1 Therapeutics, Inc., 700 Park Offices Drive, Suite 200, Research Triangle Park, NC, 27709, USA.
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Lee KM, Ahn S, Park E, Kim M. Low-Loss Pogo Pin Probe Card with a Coupling Isolation Structure up to 50 GHz. Sensors (Basel) 2023; 23:5420. [PMID: 37420587 DOI: 10.3390/s23125420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/16/2023] [Accepted: 06/05/2023] [Indexed: 07/09/2023]
Abstract
A design for a millimeter wave RF probe card that removes resonance is proposed. The designed probe card optimizes the position of the ground surface and the signal pogo pins to resolve the resonance and signal loss issues that occur when connecting a dielectric socket and a PCB. At millimeter wave frequencies, the height of the dielectric socket and pogo pin matches the length of half a wavelength, allowing the socket to act as a resonator. When the leakage signal from the PCB line is coupled to the 2.9 mm high socket with pogo pins, resonance at a frequency of 28 GHz is generated. The probe card uses the ground plane as a shielding structure to minimize this resonance and radiation loss. The importance of the signal pin location is verified via measurements in order to address the discontinuity caused by field polarity switching. A probe card fabricated using the proposed technique exhibits an insertion loss performance of -8 dB up to 50 GHz and eliminates resonance. A signal with an insertion loss of -3.1 dB can be transmitted to a system-on-chip in a practical chip test.
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Affiliation(s)
- K M Lee
- School of Electrical Engineering, Korea University, Seoul 02841, Republic of Korea
| | - S Ahn
- Samsung Electronics Co., Ltd., Suwon 16677, Republic of Korea
| | - E Park
- Samsung Electronics Co., Ltd., Suwon 16677, Republic of Korea
| | - M Kim
- School of Electrical Engineering, Korea University, Seoul 02841, Republic of Korea
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Bishop J, Rogachev GV, Ahn S, Barbui M, Cha SM, Harris E, Hunt C, Kim CH, Kim D, Kim SH, Koshchiy E, Luo Z, Park C, Parker CE, Pollacco EC, Roeder BT, Roosa M, Saastamoinen A, Scriven DP. First Observation of the β3αp Decay of ^{13}O via β-Delayed Charged-Particle Spectroscopy. Phys Rev Lett 2023; 130:222501. [PMID: 37327448 DOI: 10.1103/physrevlett.130.222501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/25/2023] [Accepted: 05/11/2023] [Indexed: 06/18/2023]
Abstract
The β-delayed proton decay of ^{13}O has previously been studied, but the direct observation of β-delayed 3αp decay has not been reported. Rare 3αp events from the decay of excited states in ^{13}N^{⋆} provide a sensitive probe of cluster configurations in ^{13}N. To measure the low-energy products following β-delayed 3αp decay, the Texas Active Target (TexAT) time projection chamber was employed using the one-at-a-time β-delayed charged-particle spectroscopy technique at the Cyclotron Institute, Texas A&M University. A total of 1.9×10^{5} ^{13}O implantations were made inside the TexAT time projection chamber. A total of 149 3αp events were observed, yielding a β-delayed 3αp branching ratio of 0.078(6)%. Four previously unknown α-decaying excited states were observed in ^{13}N at 11.3, 12.4, 13.1, and 13.7 MeV decaying via the 3α+p channel.
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Affiliation(s)
- J Bishop
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - G V Rogachev
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
- Nuclear Solutions Institute, Texas A&M University, College Station, Texas 77843, USA
| | - S Ahn
- Center for Exotic Nuclear Studies, Institute for Basic Science, 34126 Daejeon, Republic of Korea
| | - M Barbui
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - S M Cha
- Center for Exotic Nuclear Studies, Institute for Basic Science, 34126 Daejeon, Republic of Korea
| | - E Harris
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
| | - C Hunt
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
| | - C H Kim
- Department of Physics, Sungkyunkwan University (SKKU), Seoul 16419, Republic of Korea
| | - D Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science, 34126 Daejeon, Republic of Korea
| | - S H Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - E Koshchiy
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - Z Luo
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
| | - C Park
- Center for Exotic Nuclear Studies, Institute for Basic Science, 34126 Daejeon, Republic of Korea
| | - C E Parker
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - E C Pollacco
- IRFU, CEA, Université Paris-Saclay, Gif-Sur-Yvette 91190, France
| | - B T Roeder
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - M Roosa
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
| | - A Saastamoinen
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - D P Scriven
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
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Browne J, Chipps KA, Schmidt K, Schatz H, Ahn S, Pain SD, Montes F, Ong WJ, Greife U, Allen J, Bardayan DW, Blackmon JC, Blankstein D, Cha S, Chae KY, Febbraro M, Hall MR, Jones KL, Kontos A, Meisel Z, O'Malley PD, Schmitt KT, Smith K, Smith MS, Thompson P, Toomey R, Vostinar M, Walter D. First Direct Measurement Constraining the ^{34}Ar(α,p)^{37}K Reaction Cross Section for Mixed Hydrogen and Helium Burning in Accreting Neutron Stars. Phys Rev Lett 2023; 130:212701. [PMID: 37295108 DOI: 10.1103/physrevlett.130.212701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/19/2022] [Accepted: 05/02/2023] [Indexed: 06/12/2023]
Abstract
The rate of the final step in the astrophysical αp process, the ^{34}Ar(α,p)^{37}K reaction, suffers from large uncertainties due to a lack of experimental data, despite having a considerable impact on the observable light curves of x-ray bursts and the composition of the ashes of hydrogen and helium burning on accreting neutron stars. We present the first direct measurement constraining the ^{34}Ar(α,p)^{37}K reaction cross section, using the Jet Experiments in Nuclear Structure and Astrophysics gas jet target. The combined cross section for the ^{34}Ar,Cl(α,p)^{37}K,Ar reaction is found to agree well with Hauser-Feshbach predictions. The ^{34}Ar(α,2p)^{36}Ar cross section, which can be exclusively attributed to the ^{34}Ar beam component, also agrees to within the typical uncertainties quoted for statistical models. This indicates the applicability of the statistical model for predicting astrophysical (α,p) reaction rates in this part of the αp process, in contrast to earlier findings from indirect reaction studies indicating orders-of-magnitude discrepancies. This removes a significant uncertainty in models of hydrogen and helium burning on accreting neutron stars.
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Affiliation(s)
- J Browne
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - K A Chipps
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
| | - Konrad Schmidt
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - H Schatz
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - S Ahn
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - S D Pain
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
| | - F Montes
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - W J Ong
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - U Greife
- Physics Department, Colorado School of Mines, Golden, Colorado 80401
| | - J Allen
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556
| | - D W Bardayan
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556
| | - J C Blackmon
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803
| | - D Blankstein
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556
| | - S Cha
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - K Y Chae
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - M Febbraro
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - M R Hall
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556
| | - K L Jones
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
| | - A Kontos
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - Z Meisel
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
- Joint Institute for Nuclear Astrophysics (JINA-CEE), Michigan State University, East Lansing, Michigan 48824
| | - P D O'Malley
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556
| | - K T Schmitt
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - K Smith
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
| | - M S Smith
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - P Thompson
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
| | - R Toomey
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854
| | - M Vostinar
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854
| | - D Walter
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854
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Ahn S, Cao S, Russo MA, Yi JS. Abstract 703: Transient G1 cell cycle arrest with trilaciclib enhances the generation of polyfunctional CD4+ and CD8+ T cells. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
When administered prior to chemotherapy, intravenous trilaciclib transiently arrests cyclin-dependent kinase 4/6-dependent cells in the G1 phase of the cell cycle, which has been shown to augment antitumor immunity. In an open-label, phase 2 trial in patients with metastatic triple-negative breast cancer (NCT02978716), administering trilaciclib prior to gemcitabine plus carboplatin improved overall survival, potentially through protection and direct activation of immune function. To determine the impact of trilaciclib on effector T-cell function, we conducted in vitro studies to assess the kinetics of cytotoxic function and generation of polyfunctional T cells.
Peripheral blood mononuclear cells (PBMCs) or naïve CD4+ and CD8+ T cells were purified from 6 healthy human donors and activated with CD2/3/28 beads. On days 0, 1, and 3 post activation, 100 nM trilaciclib was added to the cells. To visualize phenotypic and functional changes, T cells that had been activated for 3, 7, or 14 days with or without trilaciclib were restimulated with phorbol myristate acetate (PMA) and ionomycin. Dimension-reduction analysis of flow cytometric data was used to identify polyfunctional subpopulations of CD4+ and CD8+ T cells. T-cell clusters with polyfunctional profiles were identified based on the coproduction of IFNγ, TNFα, and IL-2 cytokines. Subsets of polyfunctional clusters were defined according to other immune phenotypic profiles, including T-cell exhaustion (PD-1 and LAG-3), degranulation (granzyme B), proliferation (Ki-67), and transcription factors (TOX, TCF-1, and T-bet).
For both CD4+ and CD8+ T cells, 3 polyfunctional subpopulations were identified based on differential expression of granzyme B, PD-1, and TOX. When CD4+ and CD8+ T cells were activated in the presence of trilaciclib and restimulated with PMA and ionomycin, there was an increase in the frequency of polyfunctional T-cell subsets producing granzyme B. This was compensated by a decrease in granzyme Blow polyfunctional cells, which was associated with increased PD-1high and TOXhigh expression. Clustering analysis of trilaciclib-treated PBMCs also revealed a reduction in proliferating CD8+ T cells with undetectable effector cytokine function based on a decrease in the frequency of CD8+ T cells expressing TOXhigh and Ki-67high.
Transient G1 cell cycle arrest in T cells may limit T-cell hyperactivation, which has been shown to induce immunopathological responses. The increased generation of polyfunctional CD8+ T cells is associated with enhanced effector T-cell responses and memory T-cell differentiation. In combination with previous data showing increased differentiation of naïve T cells into memory T cells upon exposure to trilaciclib, these data support a beneficial role for trilaciclib in enhancing antitumor T-cell responses.
Citation Format: Sarah Ahn, Subing Cao, Melissa A. Russo, John S. Yi. Transient G1 cell cycle arrest with trilaciclib enhances the generation of polyfunctional CD4+ and CD8+ T cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 703.
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Affiliation(s)
- Sarah Ahn
- 1G1 Therapeutics, Inc., Research Triangle Park, NC
| | - Subing Cao
- 1G1 Therapeutics, Inc., Research Triangle Park, NC
| | | | - John S. Yi
- 1G1 Therapeutics, Inc., Research Triangle Park, NC
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Ahn S, Cao S, Jacobson A, Russo MA, Yi JS. Abstract 6674: Single-dose trilaciclib monotherapy potentiates antitumor immunity in the neoadjuvant setting of triple-negative breast cancer by modulating the composition and effector function of peripheral immune cells. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-6674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Intravenous administration of trilaciclib transiently arrests cyclin-dependent kinase 4/6-dependent cells in the G1 phase of the cell cycle during chemotherapy exposure. In an open-label, phase 2 study in patients with metastatic triple-negative breast cancer (TNBC; NCT02978716), administering trilaciclib prior to gemcitabine plus carboplatin improved overall survival and resulted in enriched T-cell diversity and decreased clonality in peripheral blood compared with administering chemotherapy alone. This phase 2, single-arm, neoadjuvant study (NCT05112536) aims to determine the immune mechanism of action of trilaciclib and its role in modulating antitumor immune responses in patients with TNBC.
Previously untreated patients with early-stage TNBC (N = 24) received single-dose trilaciclib monotherapy during the lead-in phase. After 7 days, patients received systemic therapy with 4 cycles of dose-dense doxorubicin plus cyclophosphamide and 12 weekly cycles of paclitaxel, with trilaciclib administered prior to the first dose of systemic therapy per cycle. Pembrolizumab from cycle 1 and/or carboplatin from cycle 5 was permitted per investigator discretion. Patients underwent curative surgery 3-5 weeks after the last dose of systemic therapy. Peripheral blood samples were collected at baseline, 7 (±1) days post trilaciclib monotherapy prior to chemotherapy, and pre dose on cycle 2, day 1. Peripheral blood mononuclear cells (PBMCs) were isolated from blood samples and cryopreserved for immune profiling via cytometry by time-of-flight (CyTOF), and for functional analysis via intracellular cytokine staining (ICS) and dimensionality reduction.
A preliminary analysis of PBMCs from 7 patients showed a decrease in peripheral myeloid-derived suppressor cells (MDSCs), monocytes, and classical dendritic cells following single-dose trilaciclib monotherapy. There were nominal changes to the frequency of peripheral CD4+ and CD8+ T cells. In 4/7 patients, trilaciclib monotherapy resulted in increased proportions of activated and polyfunctional CD4+ and CD8+ T cells producing IFNγ, TNFα, and IL-2 cytokines. Furthermore, trilaciclib enhanced the frequency of CD8+ T cells producing granzyme B and perforin.
The decrease in MDSCs and increase in functional T cells following trilaciclib monotherapy supports findings from an immune analysis of data from the phase 2 study of trilaciclib in patients with metastatic TNBC. Overall, these data suggest that the transient G1 arrest of peripheral immune cells by single-dose trilaciclib monotherapy favorably modulates immune responses by promoting the generation of polyfunctional T cells and limiting the number of MDSCs in circulation. Enrollment was completed in August 2022. The complete dataset from all 24 patients will be presented.
Citation Format: Sarah Ahn, Subing Cao, Amanda Jacobson, Melissa A. Russo, John S. Yi. Single-dose trilaciclib monotherapy potentiates antitumor immunity in the neoadjuvant setting of triple-negative breast cancer by modulating the composition and effector function of peripheral immune cells. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 6674.
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Affiliation(s)
- Sarah Ahn
- 1G1 Therapeutics, Inc., Research Triangle Park, NC
| | - Subing Cao
- 1G1 Therapeutics, Inc., Research Triangle Park, NC
| | | | | | - John S. Yi
- 1G1 Therapeutics, Inc., Research Triangle Park, NC
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Laguna A, Harwell A, Angenent-Mari V, Buchanan S, Persad-Paisley E, Ahn S. Abstract No. 285 Assessment of Readability and Quality of Spanish-Language Online Uterine Artery Embolization Patient Education Resources. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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Danso M, O’Shaughnessy J, Wang LS, Mosalpuria K, Hurvitz S, Goel S, Ahn S, Cao S, Yi JS, Oyekunle T, Jacobson A, Beelen A, Force J. Abstract P3-06-03: Trilaciclib induces immune changes within the tumor microenvironment in early-stage triple-negative breast cancer. Cancer Res 2023. [DOI: 10.1158/1538-7445.sabcs22-p3-06-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Abstract
Background: In early-stage triple-negative breast cancer (TNBC), there is accumulating evidence of a correlation between tumor-infiltrating lymphocytes in tumor tissue and favorable clinical outcomes, with a high CD8+/regulatory T-cell (Treg) ratio after neoadjuvant chemotherapy being predictive of overall survival and associated with pathologic complete response (Ladoire S, et al. Br J Cancer. 2011; Park YH, et al. Nat Commun. 2020). Trilaciclib is a transient inhibitor of cyclin-dependent kinase 4/6 that is administered intravenously prior to chemotherapy. In preclinical studies, trilaciclib has been shown to have immune-enhancing effects by differentially arresting CD8+ T-cell and Treg subsets, which is followed by the faster recovery of CD8+ T cells than Tregs in the tumor microenvironment. Methods: This phase 2, single-arm, open-label study aims to evaluate neoadjuvant, single-dose trilaciclib followed by trilaciclib plus dose-dense anthracycline/cyclophosphamide and taxane in patients with early-stage TNBC (NCT05112536). Patients with previously untreated, non-metastatic, confirmed TNBC and a primary tumor ≥ 1.5 cm of any nodal status receive a single dose of trilaciclib 240 mg/m2 during the lead-in phase, followed by 4 cycles of doxorubicin 60 mg/m2 plus cyclophosphamide 600 mg/m2, and 12 weekly cycles of paclitaxel 80 mg/m2. Trilaciclib 240 mg/m2 is administered prior to the first chemotherapy dose of each cycle. Pembrolizumab 400 mg every 6 weeks starting on day 1, cycle 1, and/or carboplatin AUC 1.5 every week starting on day 1, cycle 5, is allowed per investigator discretion. Tumor biopsies and peripheral blood samples are collected prior to any treatment, 7 days ± 1 day post administration of trilaciclib, and during surgery, with an additional blood sample collection on day 1, cycle 2. The primary objective is to evaluate the immune-based mechanism of action of trilaciclib after a single dose of trilaciclib, as measured by changes in the CD8+/Treg ratio in tumor tissue. Pathologic complete response, safety and tolerability, and additional exploratory immune biomarker endpoints will also be assessed. Results: As of June 3, 2022, 9 patients with early-stage TNBC had been enrolled and 8 patients had received the trilaciclib lead-in dose and initiated doxorubicin/cyclophosphamide. Patients had a median age of 53.0 years, and all had stage II tumors at diagnosis, with 7 having ductal carcinoma. The median number of chemotherapy cycles received was 3 (range 1–6), and all 8 patients received pembrolizumab. Seven patients continue study treatment; 1 patient discontinued due to disease progression. Five patients had an adverse event (AE) related to any study treatment, including 4 patients with ≥ 1 trilaciclib-related AE. There were no grade ≥ 3 treatment-related AEs or serious AEs. On-treatment, post-trilaciclib monotherapy biopsies were available for 4 patients. Following neoadjuvant trilaciclib treatment, the median density of stromal CD8+ T cells increased from 103.1/mm2 at baseline to 229.8/mm2 at day 7. The median CD8+/Treg ratio increased in 2 patients from 1.85 at baseline to 1.90 at day 7. Conclusions: Preliminary analysis of on-treatment tumor biopsies from 4 patients suggests that a single dose of trilaciclib may modulate the immune cell composition in the tumor microenvironment to support antitumor immune responses. The increase in CD8+ T cells following 7-day neoadjuvant treatment with trilaciclib supports previous data suggesting a role in T-cell infiltration. The complete dataset from all patients (estimated enrollment: N ≈ 24) and additional biomarker analyses will be presented.
Citation Format: Michael Danso, Joyce O’Shaughnessy, Lisa S. Wang, Kailash Mosalpuria, Sara Hurvitz, Shom Goel, Sarah Ahn, Subing Cao, John S. Yi, Taofik Oyekunle, Amanda Jacobson, Andrew Beelen, Jeremy Force. Trilaciclib induces immune changes within the tumor microenvironment in early-stage triple-negative breast cancer [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P3-06-03.
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Affiliation(s)
- Michael Danso
- 1Virginia Oncology Associates, Norfolk and Virginia Beach, VA
| | | | | | | | - Sara Hurvitz
- 5University of California, Los Angeles, Los Angeles, California
| | - Shom Goel
- 6Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Sarah Ahn
- 7G1 Therapeutics, Inc., Research Triangle Park, NC
| | - Subing Cao
- 8G1 Therapeutics, Inc., Research Triangle Park, NC
| | - John S. Yi
- 9G1 Therapeutics, Inc., Research Triangle Park, NC
| | | | | | | | - Jeremy Force
- 13Duke University Medical Center/Duke Cancer Institute, Durham, NC
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Kasthuri V, Laguna A, Kim N, Yoon J, Ahn S. Abstract No. 289 Modern Search Analytics: What Are Patients Asking ecan Uterine Artery Embolization? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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Kasthuri V, Kim N, Laguna A, Yoon J, Ahn S. Abstract No. 604 Modern Search Analytics: What Are Patients Asking about Prostate Artery Embolization? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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11
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Kasthuri V, Shamshad A, Davis M, Yoon J, Kumar S, Ahn S. Abstract No. 605 Modern Search Analytics: What Are Patients Asking about Varicocele Embolization? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
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12
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Kasthuri V, Gillette J, Zhang H, Kumar S, Yoon J, Ahn S. Abstract No. 190 Modern Search Analytics: What Are Patients Asking about Varicose Vein Ablation? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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13
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Chiu DW, Ahn S, Kochman A, Chisolm-Straker M. The 24-Hour Workday for New York State Home Health Care Workers: Institutional Racism in Health Care Delivery. J Health Care Poor Underserved 2023; 34:1121-1128. [PMID: 38015140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Racism named as a public health issue largely focuses on those at the care-receiving end of health care. Home health care workers (HHCWs) are predominantly Black, immigrant, and women; in New York state it is illegal for HHCWs to work 24 consecutive hours, but homecare agencies assign HHCWs to 24-hour shifts and only pay for 13 hours of work. The demanding work of HHCWs increases their risk for and experiences of injury, depression, cardiovascular disease, and cerebrovascular events. This manifestation of exploitation illustrates that racism affects health care workers as well as the public.
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Kim J, Park JH, Moon S, Kim S, Song J, Ahn S, Cho H. 46 The Effect of Mechanical Chest Compression Device on Survival After Out-of-Hospital Cardiac Arrest According to Patient Transport Interval: A Multi-center Observational Study. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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15
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Song J, Kim SJ, Lee S, Lim H, Ahn S, Kim J, Park J, Cho HJ, Moon S, Jeon ET. 44 Prediction of Mortality Among Patients With Isolated Traumatic Brain Injury Using Machine Learning Models in Asian Countries: An International Multicenter Cohort Study. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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16
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Jin BY, Song J, Kim J, Park JH, Kim S, Cho H, Moon S, Kim DH, Ahn S. 127 Effect of Metformin on Survival Outcomes in In-Hospital Cardiac Arrest Patients With Diabetes. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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17
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Kim Y, Ahn S, Jeun S, Lee Y, Park J. P11.40.A Clinicopathological Analysis of High risk Pituitary Adenomas According to the 2017 WHO Classification System for Pituitary Neuroendocrine Tumors (PitNET). Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The 2017 WHO classification of pituitary tumors has revealed “high-risk pituitary neuroendocrine tumors (PitNETs)”, which were known to have high probability for recurrence. Tumor invasion was not included in the pathological grading and classification due to frequent lack of proper pathologic assessment. However, it mentioned tumor invasion as an important prognostic feature in identifying clinically aggressive adenomas.
Material and Methods
We performed a retrospective review of a prospectively collected dataset from January 2018 to March 2021. Patient’s clinical presentation, radiologic features, pathologic findings, and clinical outcome were gathered. Inter-group analysis was performed for high-risk versus low-risk tumors, and invasive versus non-invasive tumors.
Results
Among total 116 cases of PitNETs, high-risk and low-risk tumors were identified in 32 and 84 cases, respectively. The inter-group comparison showed no differences in clinical presentation, radiologic features, pathologic findings, and clinical outcomes.Invasive and non-invasive tumors were identified in 49 and 67 cases, respectively. The invasive group tumors were more symptomatic ( 29 (59.2%) vs. 30 (44.8%), p= 0.031), with larger tumor size over 40mm (9 (18.4%) vs. 1 (1.5%), p = 0.002), and more likely to have Knosp grade higher than 3. The gross-total resection was less achievable (7 (14.3%) vs 26 (38.8%), p = 0.007) However, Ki-67 index showed no significantly difference between the invasive group and non-invasive group (2.0 vs 2.0 , p= 0.556).
Conclusion
According to our study results, the pathologic diagnosis of a high-risk tumor does not necessarily seem to properly reflect the clinical aggressiveness. Tumor invasion, however, seems to better represent the aggressive tumors that requires proper and active treatment.
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Affiliation(s)
- Y Kim
- Seoul St.Mary's Hospital , Seoul , Korea, Republic of
| | - S Ahn
- Seoul St.Mary's Hospital , Seoul , Korea, Republic of
| | - S Jeun
- Seoul St.Mary's Hospital , Seoul , Korea, Republic of
| | - Y Lee
- Seoul St.Mary's Hospital , Seoul , Korea, Republic of
| | - J Park
- Seoul St.Mary's Hospital , Seoul , Korea, Republic of
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Oulee A, Ahn S, Shahsavari S, Martin A, Wu J. LB897 The risk of COVID-19 infection in patients with alopecia areata. J Invest Dermatol 2022. [PMCID: PMC9296966 DOI: 10.1016/j.jid.2022.05.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Savarimuthu S, Midgett D, Thorn S, Ahn S, Avendano R, Melvinsdottir I, Duncan J, Papademetris X, Sinusas A. 445 Three-dimensional High Resolution Lagrangian Strain Analysis In The Right Ventricle Using Cinect In A Porcine Model. J Cardiovasc Comput Tomogr 2022. [DOI: 10.1016/j.jcct.2022.06.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Yücel G, Ahn S, Ecemiş T, Keskin M, Arslanca T, Atik A. P-655 Insulin like growth factor-1 levels in follicular fluids of patients with poor ovarian response undergoing in vitro fertilization. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Does follicular fluid insulin like growth factor level (IGF-1) in poor responders (PR) differ from normoresponders? Is there a correlation between IGF-1 and IVF outcomes?
Summary answer
Follicular IGF-1 levels are decreased in poor-responders A positive correlation exists between IGF-1 and number of metaphase II (MII) oocytes, fertilized oocytes and transferred embryos
What is known already
IGFs are mainly synthesized in liver with growth hormone stimulation. IGF-1 component in follicular fluid has been reported to play a crucial role in follicular and embryonic development. In addition to previously reported positive correlation between follicular IGF-I levels and number of high quality embryos, a significant decrease in IGF-1 levels with PR and advanced maternal age has also been reported. GH supplementation in poor responders undergoing IVF has been suggested to improve IVF outcomes. A recent Cochrane analysis reported that GH slightly increases the number of oocytes retrieved and there is an uncertain effect on live birth rates (LBR).
Study design, size, duration
Study was designed prospectively. A power analysis, of 91% determined a need for 186 patients. Therefore 186 women undergoing IVF between October 2019 and December 2020 were included. 72 (%38,7) patients were assigned to PRs group according to Bologna criteria (BC) and 114 patients (%61.3) were recruited as controls. Antagonist protocol was used for controlled ovarian hyperstimulation. hCG was administered for ovulation trigger.
Participants/materials, setting, methods
Following the ovarian hyperstimulation follicular fluid samples were collected during oocyte retrieval. When the total desired number of patients was reached, frozen and preserved follicle fluids were thawed at room temperature. IGF-1 levels in samples were measured using hIGF-1 ELISA kit (BT®, China). Follicular IGF-1 levels in PRs were compared to normoresponders and correlation between IGF-1 levels and AMH levels, number of retrieved oocytes, MII and fertilized oocytes, transferred embriyos and LBR were evaluated.
Main results and the role of chance
Mean IGF-1 levels of normoresponders and Bologna subgroups (B1, B2, B3, B4) were 13.79±14.50 ng/ml vs 5.75±1.86, 5.47±2.83, 5.96±2.16 and 5.03±1.85 ng/ml respectively (p < 0.001). There was no statistically significant difference in clinical pregnancy (CP) per transfer and LBR per transfer between normoresponders and PRs (CPR/ET: 55.1% vs 43.7%, p:0.375; 26.5% vs 12.5% , p: 0.257). In the ROC analysis for the prediction of collection of fewer than 4 oocytes at retrieval (according to BC definition of PR), statistically determined IGF-1 value was 7.02 with a sensitivity of 83% and a specificity of 38.6%. Patients with an IGF-1 value below 7.02 had a higher risk of having an oocyte number less than 4According to the results of Spearman's correlation analysis, IGF-1 levels were negatively correlated with age and number of previous failed cycles (r:-0.250, p:0,001; r:-0.153, p:0,039 respectively). IGF-1 levels were positively correlated with AMH levels, oocyte, MII oocyte, fertilized oocyte numbers and number of transferred embriyos (r: 0.221, p: 0.007; r: 0.283, p < 0.001; r: 0.293, p < 0.001; r: 0.282, p < 0.001; r: 0.194, p: 0.008 respectively). There was a positive correlation between IGF-1 levels and cycle cancellation rates (r: 0.637, p < 0,001). There was no correlation between IGF-1 levels and LBR (p:0.118).
Limitations, reasons for caution
Small number of patients was the main limitation of study.Results were not interpreted as LBR in all cases, as 21% (n:24) of the cases had still ongoing pregnancies
Wider implications of the findings
Detecting lower follicular levels of IGF-1 which plays a crucial role in GH activity may highligt the effect of GH supplementation in poor responders undergoing IVF in terms of improved outcomes. However, there is need for more solid data to employ GH in IVF treatment modalities of poor-responders.
Trial registration number
not applicable
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Affiliation(s)
- G.S Yücel
- ufuk university faculty of medicine, gynecology and obstetrics , ankara, Turkey
| | - S Ahn
- ufuk university faculty of medicine, gynecology and obstetrics , ankara, Turkey
| | - T Ecemiş
- gen art ıvf center, obstetrics and gynecology , ankara, Turkey
| | - M Keskin
- ufuk university faculty of medicine, gynecology and obstetrics , ankara, Turkey
| | - T Arslanca
- ufuk university faculty of medicine, gynecology and obstetrics , ankara, Turkey
| | - A Atik
- gen art ıvf center, embriyology , ankara, Turkey
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Hsieh C, Ward R, Oueidat K, Baird G, Ahn S. Abstract No. 262 Recurrence of breast cancer post-cryoablation in candidates previously excluded from clinical trials. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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22
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Park J, Wu H, Kim J, Lee J, Ahn S, Chung E, Eom K, Jeong W, Kwon T, Kim S, Wee C. PD-0823 Adjuvant Radiotherapy for Node-negative Parotid Gland Cancer Patients Undergoing Curative Resection. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02964-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Bishop J, Parker CE, Rogachev GV, Ahn S, Koshchiy E, Brandenburg K, Brune CR, Charity RJ, Derkin J, Dronchi N, Hamad G, Jones-Alberty Y, Kokalova T, Massey TN, Meisel Z, Ohstrom EV, Paneru SN, Pollacco EC, Saxena M, Singh N, Smith R, Sobotka LG, Soltesz D, Subedi SK, Voinov AV, Warren J, Wheldon C. Neutron-upscattering enhancement of the triple-alpha process. Nat Commun 2022; 13:2151. [PMID: 35444209 PMCID: PMC9021293 DOI: 10.1038/s41467-022-29848-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 03/31/2022] [Indexed: 11/30/2022] Open
Abstract
The neutron inelastic scattering of carbon-12, populating the Hoyle state, is a reaction of interest for the triple-alpha process. The inverse process (neutron upscattering) can enhance the Hoyle state’s decay rate to the bound states of 12C, effectively increasing the overall triple-alpha reaction rate. The cross section of this reaction is impossible to measure experimentally but has been determined here at astrophysically-relevant energies using detailed balance. Using a highly-collimated monoenergetic beam, here we measure neutrons incident on the Texas Active Target Time Projection Chamber (TexAT TPC) filled with CO2 gas, we measure the 3α-particles (arising from the decay of the Hoyle state following inelastic scattering) and a cross section is extracted. Here we show the neutron-upscattering enhancement is observed to be much smaller than previously expected. The importance of the neutron-upscattering enhancement may therefore not be significant aside from in very particular astrophysical sites (e.g. neutron star mergers). The triple-alpha process plays a role in nucleosynthesis, in the formation of 12C. Here, the authors discuss the rate and role of the neutron upscattering phenomenon on the triple-alpha process in a multi-step process.
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Affiliation(s)
- J Bishop
- Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.
| | - C E Parker
- Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA
| | - G V Rogachev
- Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.,Department of Physics & Astronomy, Texas A&M University, College Station, TX, 77843, USA.,Nuclear Solutions Institute, Texas A&M University, College Station, TX, 77843, USA
| | - S Ahn
- Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.,Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - E Koshchiy
- Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA
| | - K Brandenburg
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - C R Brune
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - R J Charity
- Department of Chemistry, Washington University, St. Louis, MO, 63130, USA
| | - J Derkin
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - N Dronchi
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - G Hamad
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - Y Jones-Alberty
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - Tz Kokalova
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | - T N Massey
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - Z Meisel
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - E V Ohstrom
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - S N Paneru
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - E C Pollacco
- IRFU, CEA, Université Paris-Saclay, Gif-Sur-Yvette, France
| | - M Saxena
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - N Singh
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - R Smith
- Department of Engineering and Mathematics, Sheffield Hallam University, Sheffield, S1 1WB, UK
| | - L G Sobotka
- Department of Chemistry, Washington University, St. Louis, MO, 63130, USA.,Department of Physics, Washington University, St. Louis, MO, 63130, USA.,McDonnell Center for the Space Sciences, Washington University, St. Louis, MO, 63130, USA
| | - D Soltesz
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - S K Subedi
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - A V Voinov
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - J Warren
- Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA
| | - C Wheldon
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
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24
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Ahn S, Moon DG, Cho S, Lee H, Han DE, Lee DH. Postoperative Progress of Modified Grid Incision and Sealing with Collagen Fleece for Treatment of Peyronie's Disease. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Agarwalla P, Ogunnaike EA, Ahn S, Froehlich KA, Jansson A, Ligler FS, Dotti G, Brudno Y. Bioinstructive implantable scaffolds for rapid in vivo manufacture and release of CAR-T cells. Nat Biotechnol 2022; 40:1250-1258. [PMID: 35332339 PMCID: PMC9376243 DOI: 10.1038/s41587-022-01245-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 02/02/2022] [Indexed: 12/29/2022]
Abstract
Despite their clinical success, chimeric antigen receptor (CAR)-T cell therapies for B-cell malignancies are limited by lengthy, costly and labor-intensive ex vivo manufacturing procedures that may lead to cell products with heterogeneous composition. Here we describe an implantable, multifunctional alginate scaffold for T cell engineering and release (MASTER) that streamlines in vivo CAR-T cell manufacturing and reduces processing time to a single day. When seeded with human peripheral blood mononuclear cells and CD19-encoding retroviral particles, MASTER provides the appropriate interface for viral vector-mediated gene transfer and, following subcutaneous implantation, mediates the release of functional CAR-T cells in mice. We further demonstrate that in vivo-generated CAR-T cells enter the bloodstream, and control distal tumor growth in a mouse xenograft model of lymphoma, showing greater persistence than conventional CAR-T cells. MASTER promises to transform CAR-T cell therapy by fast-tracking manufacture and potentially reducing the complexity and resources needed for provision of this type of therapy.
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Affiliation(s)
- Pritha Agarwalla
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA
| | - Edikan A Ogunnaike
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah Ahn
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kristen A Froehlich
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA.,Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Anton Jansson
- Analytical Instrumentation Facility, North Carolina State University, Raleigh, NC, USA
| | - Frances S Ligler
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA
| | - Gianpietro Dotti
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yevgeny Brudno
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA. .,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA. .,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Ha YJ, Ji E, Lee JH, Kim JH, Park EH, Chung SW, Chang SH, Yoo JJ, Kang EH, Ahn S, Song YW, Lee YJ. High Estimated 24-Hour Urinary Sodium Excretion Is Related to Symptomatic Knee Osteoarthritis: A Nationwide Cross-Sectional Population-Based Study. J Nutr Health Aging 2022; 26:581-589. [PMID: 35718867 DOI: 10.1007/s12603-022-1804-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES High salt intake results in various harmful effects on human health including hypertension, cardiovascular disease, and reduced bone density. Despite this, there are very few studies in the literature that have investigated the association between sodium intake and osteoarthritis (OA). Therefore, we aimed to explore these associations in a Korean population. METHODS This study used cross-sectional data from adult subjects aged 50-75 years from two consecutive periods of the Korean National Health and Nutrition Examination Survey V-VII (2010-2011 and 2014-2016). The estimated 24-hour urinary sodium excretion (24HUNa) was used as a surrogate marker of salt intake. In the 2010-2011 dataset, knee OA (KOA) was defined as the presence of the radiographic features of OA and knee pain. The association between KOA and salt intake was analysed using univariable and multivariable logistic regression methods. For the sensitivity analysis, the same procedures were conducted on subjects with self-reported OA (SR-OA) with knee pain in the 2010-2011 dataset and any site SR-OA in the 2014-2016 dataset. RESULTS Subjects with KOA had significantly lower energy intake, but higher 24HUNa than those without KOA. The restricted cubic spline plots demonstrated a J-shaped distribution between 24HUNa and prevalent KOA. When 24HUNa was stratified into five groups (<2, 2-3, 3-4, 4-5 and ≥5 g/day), subjects with high sodium intake (≥5 g/day) had a higher risk of KOA (odds ratio [OR] = 1.64, 95% confidence interval [CI] 1.03-2.62) compared to the reference group (3-4 g/day) after adjusting for covariates. The sensitivity analysis based on SR-OA with knee pain showed that high sodium intake was also significantly associated with increased prevalence of OA (OR = 1.84, 95% CI 1.10-3.10) compared with the reference group. Regarding SR-OA at any site in the 2014-2016 dataset, estimated 24HUNa showed a significantly positive association with the presence of SR-OA after adjusting for potential confounders. CONCLUSIONS This nationwide Korean representative study showed a significant association between symptomatic KOA and high sodium intake (≥5 g/day). Avoidance of a diet high in salt might be beneficial as a non-pharmacologic therapy for OA.
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Affiliation(s)
- Y-J Ha
- Yun Jong Lee, M.D., Ph.D., Department of Internal Medicine, Seoul National University Bundang Hospital, 82 Gumi-ro, 173 Beongil, Bundang-gu, Seongnam-si, Gyeonggi-do 13620, Korea, Tel.: +82-31-787-7049, Fax.: +82-31-787-4051, E-mail:
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27
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Kim H, Heo YJ, Cho YA, Kang SY, Ahn S, Kim KM. Tumor immune microenvironment is influenced by frameshift mutations and tumor mutational burden in gastric cancer. Clin Transl Oncol 2021; 24:556-567. [PMID: 34767183 DOI: 10.1007/s12094-021-02714-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/23/2021] [Indexed: 02/05/2023]
Abstract
PURPOSE Immunoscore can effectively predict prognosis in patients with colon cancer; however, its clinical application is limited. We modified the Immunoscore and created a tumor immune microenvironment (TIM) classification system for gastric carcinoma. Unlike previous studies that used small sample sizes or focused on particular immune-cell subtypes, our simplified system enables pathologists to classify gastric carcinomas intuitively using H&E-stained sections. METHODS Samples from 326 patients with advanced gastric carcinoma were reviewed and analyzed by pathologists using simple determination and digital image analysis. Comprehensive results of cancer-panel sequencing, Epstein-Barr‒virus (EBV) status, and PD-L1, HER2, ATM, PTEN, MET, FGFR2, and EGFR immunohistochemistry were evaluated with respect to the TIM class. RESULTS The TIM was classified as "hot" (n = 22), "immunosuppressed" (n = 178), "excluded" (n = 83), or "cold" (n = 43). TIM category was significantly associated with numbers of frameshift mutations (P < 0.001) and high tumor mutational burden (P < 0.004), and predicted overall survival. It was also significantly associated with age, histological type, degree of fibrosis, PD-L1 expression, loss of ATM and PTEN expression (P < 0.001), sex, EBV positivity, and HER2 overexpression (P < 0.04). "Hot" tumors were frequent in PD-L1 expressing and EBV-positive samples, and in those with ATM and PTEN loss. "Excluded" tumors were frequent in HER2-positive cases, whereas "cold" tumors were more frequent in younger patients with poorly cohesive histology and high fibrosis levels. CONCLUSIONS TIM classification system for gastric carcinoma has prognostic significance and results in classes that are associated with molecular characteristics.
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Affiliation(s)
- H Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y J Heo
- The Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y A Cho
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Republic of Korea
| | - S Y Kang
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S Ahn
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K -M Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. .,The Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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Lee E, Chung H, Lee Y, Lee EJ, Park Y, Kim Y, Park J, Ahn S, Kim J, Ahn K, Park K, Son W, Yeom D, Jung J, Won J, Oh S. 544P A novel HER2/4-1BB bispecific antibody, YH32367 (ABL105) exerts significant anti-tumor effects through tumor-directed T cell activation. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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KIM D, Wu H, Kim J, Ahn S, Chung E, Eom K, Jung Y, Jeong W, Kwon T, Kim S, Wee C. PO-0986 Radiotherapy versus Surgery in Early Stage HPV-positive Oropharyngeal Cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07437-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ranganathan R, Shou P, Ahn S, Sun C, West J, Savoldo B, Dotti G. CAR T cells Targeting Human Immunoglobulin Light Chains Eradicate Mature B-cell Malignancies While Sparing a Subset of Normal B Cells. Clin Cancer Res 2021; 27:5951-5960. [PMID: 33858858 DOI: 10.1158/1078-0432.ccr-20-2754] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 02/08/2021] [Accepted: 04/12/2021] [Indexed: 11/16/2022]
Abstract
PURPOSE CD19-redirected chimeric antigen receptor (CAR.CD19) T cells promote clinical responses in patients with relapsed/refractory B-cell non-Hodgkin lymphomas and chronic lymphocytic leukemia (CLL). However, patients showing sustained clinical responses after CAR.CD19-T treatment show increased infection risk due to compromised B-lymphocyte recovery. Mature B cell-derived malignancies express monoclonal immunoglobulins bearing either κ- or λ-light chains. We initially constructed CAR-T targeting the κ-light-chain (CAR.κ) and established a clinical study with it. After optimizing the CAR molecule, cells developed CAR-T targeting the λ-light chain (CAR.λ) and we explored their antitumor activity. EXPERIMENTAL DESIGN Using Igλ+ lymphoma cell lines and patient-derived Igλ+ CLL cells, we evaluated the in vitro tumor cytotoxicity and cytokine profiles of CAR.λ. We also assessed the in vivo efficacy of CAR.λ in xenograft Igλ+ lymphoma models including a patient-derived xenograft (PDX) of mantle cell lymphoma, and the effects of λ- or κ-light chain-specific CAR-T on normal B lymphocytes in a humanized murine model. RESULTS CAR.λ demonstrated antitumor effects against Igλ+ lymphoma cells and patient-derived CLL cells in vitro, and in vivo in xenograft and PDX Igλ+ lymphoma murine models. Antitumor activity of CAR.λ was superimposable to CAR.CD19. Furthermore, we demonstrated in the humanized murine model that λ- or κ-light chain-specific CAR-T cells only depleted the corresponding targeted light chain-expressing normal B cells, while sparing the reciprocal light chain carrying B cells. CONCLUSIONS Adoptive transfer of CAR.λ and CAR.κ-T cells represents a useful and alternative modality to CAR.CD19-T cells in treating mature B-cell malignancies with minimal impact on humoral immunity.
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Affiliation(s)
- Raghuveer Ranganathan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
| | - Peishun Shou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Sarah Ahn
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Chuang Sun
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - John West
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Barbara Savoldo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Gianpietro Dotti
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. .,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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An SJ, Lee EJ, Jeong SH, Hong YP, Ahn S, Yang YJ. Perinatal exposure to di-(2-ethylhexyl) phthalate induces hepatic lipid accumulation mediated by diacylglycerol acyltransferase 1. Hum Exp Toxicol 2021; 40:1698-1709. [PMID: 33832334 DOI: 10.1177/09603271211003314] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Di-(2-ethylhexyl) phthalate (DEHP) is a commonly used plasticizer in consumer products and medical devices. It is also suspected to exacerbate the development of fatty liver. However, the mechanisms underlying excessive lipid synthesis and its deposition in the liver are yet to be identified. This study was aimed to evaluate the molecular mechanisms of hepatic lipid accumulation in adult male offspring after perinatal exposure to DEHP. METHOD Corn oil and DEHP (0.75 mg/kg/day) were administered once per day to dam from gestation day 6 to postnatal day (PND) 21 by oral gavage. After the weaning period, DEHP treated male pups were categorized into early life stage- and lifelong period group. Male rats both control and early life stage group administered corn oil, and lifelong period group administered DEHP from PND 22 to 70. Histological examination and triglyceride (TG) levels in the liver were analyzed. Expressions of transcription factors associated with lipid accumulation in the liver were analyzed. RESULTS Both early life stage- and lifelong period group, hepatic TG levels, and mRNA and protein expression of diacylglycerol acyltransferase 1 (DGAT1) were significantly higher than control (TG: all p < 0.05, mRNA & protein: p < 0.05 and p < 0.001, respectively). The average body weight from PND 35 to 63, and mRNA and protein expression of sterol regulatory element binding protein 1c in lifelong period group were significantly lower than control (all p < 0.05); however, alanine transaminase were significantly higher than control (p < 0.01). CONCLUSION Perinatal exposure to DEHP may induce the hepatic lipid accumulation through up-regulation of DGAT1 expression.
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Affiliation(s)
- S J An
- Department of Neurology, Catholic Kwandong University International St Mary's Hospital, Incheon, Republic of Korea.,These authors are equally contributed to this work
| | - E J Lee
- Institute for Catholic Integrative Medicine, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea.,These authors are equally contributed to this work
| | - S-H Jeong
- Division of Gastroenterology, Department of Internal Medicine, Catholic Kwandong University International St Mary's Hospital, Incheon, Republic of Korea
| | - Y-P Hong
- Department of Preventive Medicine, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - S Ahn
- Department of Pathology, Catholic Kwandong University International St Mary's Hospital, Incheon, Republic of Korea
| | - Y-J Yang
- Institute of Biomedical Science, Catholic Kwandong University International St Mary's Hospital, Incheon, Republic of Korea
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Lichtman EI, Du H, Shou P, Song F, Suzuki K, Ahn S, Li G, Ferrone S, Su L, Savoldo B, Dotti G. Preclinical Evaluation of B7-H3-specific Chimeric Antigen Receptor T Cells for the Treatment of Acute Myeloid Leukemia. Clin Cancer Res 2021; 27:3141-3153. [PMID: 33531429 DOI: 10.1158/1078-0432.ccr-20-2540] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 12/01/2020] [Accepted: 01/28/2021] [Indexed: 12/17/2022]
Abstract
PURPOSE The development of safe and effective chimeric antigen receptor (CAR) T-cell therapy for acute myeloid leukemia (AML) has largely been limited by the concomitant expression of most AML-associated surface antigens on normal myeloid progenitors and by the potential prolonged disruption of normal hematopoiesis by the immunotargeting of these antigens. The purpose of this study was to evaluate B7-homolog 3 (B7-H3) as a potential target for AML-directed CAR T-cell therapy. B7-H3, a coreceptor belonging to the B7 family of immune checkpoint molecules, is overexpressed on the leukemic blasts of a significant subset of patients with AML and may overcome these limitations as a potential target antigen for AML-directed CAR-T therapy. EXPERIMENTAL DESIGN B7-H3 expression was evaluated on AML cell lines, primary AML blasts, and normal bone marrow progenitor populations. The antileukemia efficacy of B7-H3-specific CAR-T cells (B7-H3.CAR-T) was evaluated using in vitro coculture models and xenograft models of disseminated AML, including patient-derived xenograft models. The potential hematopoietic toxicity of B7-H3.CAR-Ts was evaluated in vitro using colony formation assays and in vivo in a humanized mouse model. RESULTS B7-H3 is expressed on monocytic AML cell lines and on primary AML blasts from patients with monocytic AML, but is not significantly expressed on normal bone marrow progenitor populations. B7-H3.CAR-Ts exhibit efficient antigen-dependent cytotoxicity in vitro and in xenograft models of AML, and are unlikely to cause unacceptable hematopoietic toxicity. CONCLUSIONS B7-H3 is a promising target for AML-directed CAR-T therapy. B7-H3.CAR-Ts control AML and have a favorable safety profile in preclinical models.
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Affiliation(s)
- Eben I Lichtman
- Division of Hematology, Department of Medicine, University of North Carolina, Chapel Hill, North Carolina. .,Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Hongwei Du
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Peishun Shou
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Feifei Song
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Kyogo Suzuki
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Sarah Ahn
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Guangming Li
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Soldano Ferrone
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Lishan Su
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
| | - Barbara Savoldo
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Pediatrics, University of North Carolina, Chapel Hill, North Carolina
| | - Gianpietro Dotti
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.,Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
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Ong WJ, Brown EF, Browne J, Ahn S, Childers K, Crider BP, Dombos AC, Gupta SS, Hitt GW, Langer C, Lewis R, Liddick SN, Lyons S, Meisel Z, Möller P, Montes F, Naqvi F, Pereira J, Prokop C, Richman D, Schatz H, Schmidt K, Spyrou A. β Decay of ^{61}V and its Role in Cooling Accreted Neutron Star Crusts. Phys Rev Lett 2020; 125:262701. [PMID: 33449748 DOI: 10.1103/physrevlett.125.262701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
The interpretation of observations of cooling neutron star crusts in quasipersistent x-ray transients is affected by predictions of the strength of neutrino cooling via crust Urca processes. The strength of crust Urca neutrino cooling depends sensitively on the electron-capture and β-decay ground-state-to-ground-state transition strengths of neutron-rich rare isotopes. Nuclei with a mass number of A=61 are predicted to be among the most abundant in accreted crusts, and the last remaining experimentally undetermined ground-state-to-ground-state transition strength was the β decay of ^{61}V. This Letter reports the first experimental determination of this transition strength, a ground-state branching of 8.1_{-3.1}^{+4.0}%, corresponding to a log ft value of 5.5_{-0.2}^{+0.2}. This result was achieved through the measurement of the β-delayed γ rays using the total absorption spectrometer SuN and the measurement of the β-delayed neutron branch using the neutron long counter system NERO at the National Superconducting Cyclotron Laboratory at Michigan State University. This method helps to mitigate the impact of the pandemonium effect in extremely neutron-rich nuclei on experimental results. The result implies that A=61 nuclei do not provide the strongest cooling in accreted neutron star crusts as expected by some predictions, but that their cooling is still larger compared to most other mass numbers. Only nuclei with mass numbers 31, 33, and 55 are predicted to be cooling more strongly. However, the theoretical predictions for the transition strengths of these nuclei are not consistently accurate enough to draw conclusions on crust cooling. With the experimental approach developed in this work, all relevant transitions are within reach to be studied in the future.
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Affiliation(s)
- W-J Ong
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - E F Brown
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Computational Mathematics, Science, and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Browne
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - S Ahn
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Cylotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - K Childers
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - B P Crider
- Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - A C Dombos
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - S S Gupta
- Indian Institute of Technology Ropar, Nangal Road, Rupnagar (Ropar), Punjab 140 001, India
| | - G W Hitt
- Department of Physics and Engineering Science, Coastal Carolina University, Conway, South Carolina 29528, USA
| | - C Langer
- Institute for Applied Physics, Goethe-University Frankfurt a. M., Frankfurt am Main 60438, Germany
| | - R Lewis
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - S N Liddick
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - S Lyons
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - Z Meisel
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Ohio Univeristy, Athens, Ohio 45701, USA
| | - P Möller
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - F Montes
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - F Naqvi
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics & Astrophysics, University of Delhi, Delhi 110007, India
| | - J Pereira
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - C Prokop
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Richman
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - H Schatz
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - K Schmidt
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Spyrou
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics-Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
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Park S, Choi J, Ahn S, Park H. Dosimetric Analysis of the Effects of a Temporary Tissue Expander on the Radiotherapy Technique. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Arslan M, Li H, Lee H, Mikula M, Ahn S. Calretinin-Positive Mucosal Innervation (C-mi) as a Potential Biomarker to Predict Fibrosis in Crohn’s Disease (CD): A Pilot Study. Am J Clin Pathol 2020. [DOI: 10.1093/ajcp/aqaa161.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction/Objective
There is no reliable biomarker to predict the degree of fibrosis in CD. Quantification of C-mi has been used as a surrogate for enteric neural structures in Hirschsprung disease. The quantity of C-mi at the proximal margin may correlate with the degree of fibrosis in resected CD.
Methods
Ileocolonic resection cases for 20 CD and 3 trauma (control) were retrieved. Cases with severe mucosal inflammation at the margins were excluded. The proximal and distal margin sections were subjected to calretinin immunohistochemistry. Random mucosal images were captured from scanned slides (x200, JPEG), submucosa was edited out, and C-mi was calculated by image processing and analysis. rC-mi was defined as the mean C-mi of proximal margin normalized by that of distal margin. Cases with rC-mi less than the mean rC-mi + 2 SD of the controls were excluded. The maximum thicknesses of submucosa and muscularis propria were measured at the most stenotic site, microscopically. Pearson’s correlation test and Student’s t-test were performed to correlate the parameters and compare the means, respectively.
Results
A total of 216 images were captured (mean 9.3 images per case; range 7 to 10). The mean rC-mi of CD (1.26) was greater than the controls (mean 0.43) (p<0.05). The mean rC-mi + 2 SD of the control group was 0.91, thus 2 CD cases were excluded from final analysis. The rC-mi of CD showed an inverse relationship with maximum submucosal thickness (mean 3.4 mm, range 0.2 to 5.9) at the site of stenosis (r=-0.47; p<0.05), but not with muscularis propria.
Conclusion
The rC-mi of CD was inversely correlated with submucosal fibrosis. Altered stromal integrity, impaired intercellular signaling, progressive reduction and loss of telocytes induced by submucosal fibrosis may reduce the regenerative capacity of enteric neural structures in CD. Therefore, a decreasing trend in rC-mi may predict fibrosis progression in CD.
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Affiliation(s)
- M Arslan
- Pathology and Laboratory medicine, Albany Medical Center, Albany, New York, UNITED STATES
| | - H Li
- Pathology and Laboratory medicine, Albany Medical Center, Albany, New York, UNITED STATES
| | - H Lee
- Pathology and Laboratory medicine, Albany Medical Center, Albany, New York, UNITED STATES
| | - M Mikula
- Albany Medical College, Albany, New York, UNITED STATES
| | - S Ahn
- GE Global Research, Niskayuna, New York, UNITED STATES
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Agarwalla P, Ogunnaike EA, Ahn S, Ligler FS, Dotti G, Brudno Y. Scaffold-Mediated Static Transduction of T Cells for CAR-T Cell Therapy. Adv Healthc Mater 2020; 9:e2000275. [PMID: 32592454 DOI: 10.1002/adhm.202000275] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/08/2020] [Indexed: 01/08/2023]
Abstract
Chimeric antigen receptor T (CAR-T) cell therapy has produced impressive clinical responses in patients with B-cell malignancies. Critical to the success of CAR-T cell therapies is the achievement of robust gene transfer into T cells mediated by viral vectors such as gamma-retroviral vectors. However, current methodologies of retroviral gene transfer rely on spinoculation and the use of retronectin, which may limit the implementation of cost-effective CAR-T cell therapies. Herein, a low-cost, tunable, macroporous, alginate scaffold that transduces T cells with retroviral vectors under static condition is described. CAR-T cells produced by macroporous scaffold-mediated viral transduction exhibit >60% CAR expression, retain effector phenotype, expand to clinically relevant cell numbers, and eradicate CD19+ lymphoma in vivo. Efficient transduction is dependent on scaffold macroporosity. Taken together, the data show that macroporous alginate scaffolds serve as an attractive alternative to current transduction protocols and have high potential for clinical translation to genetically modify T cells for adoptive cellular therapy.
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Affiliation(s)
- Pritha Agarwalla
- Joint Department of Biomedical Engineering, University of North Carolina ‐ Chapel Hill and North Carolina State University ‐ Raleigh 1840 Enterpreneur Way Raleigh NC 27695 USA
| | - Edikan A. Ogunnaike
- Department of Microbiology and ImmunologyUniversity of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
| | - Sarah Ahn
- Department of Microbiology and ImmunologyUniversity of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
| | - Frances S. Ligler
- Joint Department of Biomedical Engineering, University of North Carolina ‐ Chapel Hill and North Carolina State University ‐ Raleigh 1840 Enterpreneur Way Raleigh NC 27695 USA
| | - Gianpietro Dotti
- Department of Microbiology and ImmunologyUniversity of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
- Lineberger Comprehensive Cancer CenterUniversity of North Carolina Chapel Hill. 450 West Dr. Chapel Hill NC 27599 USA
| | - Yevgeny Brudno
- Joint Department of Biomedical Engineering, University of North Carolina ‐ Chapel Hill and North Carolina State University ‐ Raleigh 1840 Enterpreneur Way Raleigh NC 27695 USA
- Lineberger Comprehensive Cancer CenterUniversity of North Carolina Chapel Hill. 450 West Dr. Chapel Hill NC 27599 USA
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Ma X, Shou P, Smith C, Chen Y, Du H, Sun C, Porterfield Kren N, Michaud D, Ahn S, Vincent B, Savoldo B, Pylayeva-Gupta Y, Zhang S, Dotti G, Xu Y. Interleukin-23 engineering improves CAR T cell function in solid tumors. Nat Biotechnol 2020; 38:448-459. [PMID: 32015548 PMCID: PMC7466194 DOI: 10.1038/s41587-019-0398-2] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 12/17/2019] [Indexed: 02/06/2023]
Abstract
Cytokines that stimulate T cell proliferation, such as interleukin (IL)-15, have been explored as a means of boosting the antitumor activity of chimeric antigen receptor (CAR) T cells. However, constitutive cytokine signaling in T cells and activation of bystander cells may cause toxicity. IL-23 is a two-subunit cytokine known to promote proliferation of memory T cells and T helper type 17 cells. We found that, upon T cell antigen receptor (TCR) stimulation, T cells upregulated the IL-23 receptor and the IL-23α p19 subunit, but not the p40 subunit. We engineered expression of the p40 subunit in T cells (p40-Td cells) and obtained selective proliferative activity in activated T cells via autocrine IL-23 signaling. In comparison to CAR T cells, p40-Td CAR T cells showed improved antitumor capacity in vitro, with increased granzyme B and decreased PD-1 expression. In two xenograft and two syngeneic solid tumor mouse models, p40-Td CAR T cells showed superior efficacy in comparison to CAR T cells and attenuated side effects in comparison to CAR T cells expressing IL-18 or IL-15.
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MESH Headings
- Animals
- Cell Hypoxia/genetics
- Cell Line, Tumor
- Cell Proliferation
- Humans
- Immunotherapy, Adoptive/methods
- Interleukin-12 Subunit p40/genetics
- Interleukin-12 Subunit p40/metabolism
- Interleukin-23/genetics
- Interleukin-23/metabolism
- Lymphocyte Activation
- Mice
- Neoplasms/immunology
- Neoplasms/therapy
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/metabolism
- Receptors, Chimeric Antigen/genetics
- Receptors, Chimeric Antigen/metabolism
- Receptors, Interleukin/genetics
- Receptors, Interleukin/metabolism
- STAT3 Transcription Factor/metabolism
- Signal Transduction/genetics
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Xingcong Ma
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Oncology, Second Affiliated Hospital of Xi'an, Jiaotong University, Xi'an, China
| | - Peishun Shou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Christof Smith
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yuhui Chen
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hongwei Du
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Chuang Sun
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Nancy Porterfield Kren
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Daniel Michaud
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah Ahn
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Benjamin Vincent
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Barbara Savoldo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yuliya Pylayeva-Gupta
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Shuqun Zhang
- Department of Oncology, Second Affiliated Hospital of Xi'an, Jiaotong University, Xi'an, China
| | - Gianpietro Dotti
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Yang Xu
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Lee S, Ahn S, Choi J, Ko BR, Semertzidis YK. Axion Dark Matter Search around 6.7 μeV. Phys Rev Lett 2020; 124:101802. [PMID: 32216429 DOI: 10.1103/physrevlett.124.101802] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
An axion dark matter search with the CAPP-8TB haloscope is reported. Our results are sensitive to axion-photon coupling g_{aγγ} down to the QCD axion band over the axion mass range between 6.62 and 6.82 μeV at a 90% confidence level, which is the most sensitive result in the mass range to date.
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Affiliation(s)
- S Lee
- Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon 34051, Republic of Korea
| | - S Ahn
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - J Choi
- Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon 34051, Republic of Korea
| | - B R Ko
- Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon 34051, Republic of Korea
| | - Y K Semertzidis
- Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon 34051, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
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Mitsuyama R, Reinert S, Ahn S. 3:18 PM Abstract No. 366 Imaging features and clinical factors as predictors of endovascular therapy and outcomes in rectus sheath hematoma. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Son J, Carr C, Chambers LM, Michener C, Meng Y, Yen T, Beavis A, Stone R, Wethington S, Burkett W, Richardson D, Staley AS, Ahn S, Gehrig P, Torres D, Dowdy S, Sullivan M, Modesitt S, Watson C, Secord A, Veade A, Havrilesky L, Loreen A, Griffin K, Jackson A, Fader AN, Ricci S. Adjuvant treatment in high intermediate risk early stage endometrial cancer. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2019.11.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sinha I, Aluthge D, Ahn S. 3:45 PM Abstract No. 132 Machine learning may assist in the selection of candidates for outpatient liver ablation. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Sinha I, Aluthge D, Ahn S. 3:27 PM Abstract No. 55 Predicting mortality following transjugular intrahepatic portosystemic shunt: a machine learning approach. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Rauschert L, Purkayastha S, Zhao Y, Xi I, Wang R, Khurana S, McGirr A, Soulen M, Zhang Z, Silva A, Stavropoulos S, Ahn S, Bai H. 3:18 PM Abstract No. 292 Differentiation of malignant and benign renal tumors using magnetic resonance–based radiomics. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Park L, Dibble E, Baird G, George P, Ahn S. 4:12 PM Abstract No. 216 What medical students know (or think they know) about interventional radiology. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Park L, Dibble E, Baird G, George P, Ahn S. 3:09 PM Abstract No. 209 Diversity in interventional radiology: motivations and deterrents to interventional radiology among female and underrepresented minority medical students. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Park L, Dibble E, Baird G, George P, Ahn S. 4:21 PM Abstract No. 217 What medical students think about interventional radiology: motivations and deterrents. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Sun C, Shou P, Du H, Hirabayashi K, Chen Y, Herring LE, Ahn S, Xu Y, Suzuki K, Li G, Tsahouridis O, Su L, Savoldo B, Dotti G. THEMIS-SHP1 Recruitment by 4-1BB Tunes LCK-Mediated Priming of Chimeric Antigen Receptor-Redirected T Cells. Cancer Cell 2020; 37:216-225.e6. [PMID: 32004441 PMCID: PMC7397569 DOI: 10.1016/j.ccell.2019.12.014] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 10/21/2019] [Accepted: 12/26/2019] [Indexed: 12/15/2022]
Abstract
Chimeric antigen receptor (CAR) T cell costimulation mediated by CD28 and 4-1BB is essential for CAR-T cell-induced tumor regression. However, CD28 and 4-1BB differentially modulate kinetics, metabolism and persistence of CAR-T cells, and the mechanisms governing these differences are not fully understood. We found that LCK recruited into the synapse of CD28-encoding CAR by co-receptors causes antigen-independent CAR-CD3ζ phosphorylation and increased antigen-dependent T cell activation. In contrast, the synapse formed by 4-1BB-encoding CAR recruits the THEMIS-SHP1 phosphatase complex that attenuates CAR-CD3ζ phosphorylation. We further demonstrated that the CAR synapse can be engineered to recruit either LCK to enhance the kinetics of tumor killing of 4-1BB CAR-T cells or SHP1 to tune down cytokine release of CD28 CAR-T cells.
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Affiliation(s)
- Chuang Sun
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Peishun Shou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hongwei Du
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Koichi Hirabayashi
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yuhui Chen
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Laura E Herring
- Michael Hooker Proteomics Center, Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah Ahn
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yang Xu
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kyogo Suzuki
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Guangming Li
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ourania Tsahouridis
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lishan Su
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Barbara Savoldo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Gianpietro Dotti
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Ahn S, Lee D, Jeong H, Moon D, Park H, Park N. 024 Advanced Glycation End-products Measuring with Skin Auto Fluorescence: Correlation with Diabetic Erectile Dysfunction and Non-diabetic Erectile Dysfunction. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2019.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ko A, Park HJ, Lee ES, Park SB, Kim YK, Choi SY, Ahn S. Comparison of the diagnostic performance of the 2017 and 2018 versions of LI-RADS for hepatocellular carcinoma on gadoxetic acid enhanced MRI. Clin Radiol 2019; 75:319.e1-319.e9. [PMID: 31858990 DOI: 10.1016/j.crad.2019.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 11/13/2019] [Indexed: 12/18/2022]
Abstract
AIM To compare the diagnostic performance of the 2017 (v2017) and 2018 versions (v2018) of the Liver Imaging-Reporting and Data System (LI-RADS) for hepatocellular carcinoma (HCC) using gadoxetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI) and to evaluate the effect in v2018. MATERIALS AND METHODS Treatment-naive patients at high-risk for HCC who underwent Gd-EOB-MRI were included. The LI-RADS categories were assigned according to v2017 and v2018. The diagnostic performances were compared between v2017 and v2018 according to the size and combination of imaging features. RESULTS A total of 117 patients with 137 observations were identified, including 89 HCCs; 76.2% (64/84) of observations with threshold growth were re-classified as subthreshold growth when using v2018 instead of v2017. The final categories changed in nine (14%) cases. For the combination of LR-5/LR-5V, there were no significant differences in sensitivity and specificity between the two versions (sensitivity, 64% versus 58.4%; specificity, 87.5% versus 85.4%; all p>0.05). For the combination of LR-4 and LR-5/5V, the diagnostic performance of v2018 was inferior to that of v2017 when considering only major features (accuracy, 86.1% versus 80.3%, respectively; p=0.013), particularly in observations measuring 10-20 mm, but was comparable after adding the ancillary features (accuracy, 86.9% versus 86.1%, respectively; p=1.00). CONCLUSION In LI-RADS v2018, although a considerable number of observations re-classified subthreshold growth, changes in the assigned categories were insignificant; overall diagnostic performance was comparable to that of v2017, but v2018 might emphasise the value of ancillary features in combination with major features for determining the probability of HCC.
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Affiliation(s)
- A Ko
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - H J Park
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea.
| | - E S Lee
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - S B Park
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - Y K Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S-Y Choi
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - S Ahn
- Department of Mathematics, Ajou University, Suwon, Republic of Korea
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Kim G, Ahn S, Hwang JH, Lee JC, Kim J. High PD-L1 expression is associated with treatment response to pembrolizumab in patients with advanced biliary tract cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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